Home / 34,251.15-47,268.38-20,820.20

Finding the Fourth Proportional to 34,251.15, 47,268.38 and 20,820.20

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Solution

The fourth proportional to 34,251.15, 47,268.38 and 20,820.20 is: 28,732.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,251.15 : 47,268.38 = 20,820.20 : x
  2. Step 2: Convert to fraction form
    34,251.15/47,268.38 = 20,820.20/x
  3. Step 3: Cross multiply
    34,251.15x = 47,268.38 × 20,820.20
  4. Step 4: Simplify right side
    34,251.15x = 984,137,021.18
  5. Step 5: Solve for x
    x = 984,137,021.18/34,251.15
  6. Step 6: Final answer
    x = 28,732.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.